Electronics Forum: cleaning inspection (Page 1 of 25)

stencil cleaning

Electronics Forum | Fri Oct 14 14:09:19 EDT 2005 | bschreiber

Your problem is not the 0.4 pitch. Your problem is the manual cleaning. Manual cleaning will only remove the solder paste from the surface of the stencil. What's more, manual cleaning will force additional contamination into the 0.4 pitch apertures

Stencil cleanliness and inspection

Electronics Forum | Thu Jun 07 15:37:32 EDT 2001 | Claude_Couture

Kerryn, It's the first time I hear someone who needs an automated inspection machine to check the cleanliness of stencils. Why not improve on the cleaning method itself. I use ultrasonic batch cleaner. It takes 3 minutes to clean a stencil, 2 minutes

Stencil cleanliness and inspection

Electronics Forum | Tue Jun 05 13:23:27 EDT 2001 | kerryn

We are a high-mix/low-volume operation and end up cleaning 40 - 50 stencils per day. Does anybody know of an automated inspection system or "scanner" that can check a stencil for cleanliness?

Stencil cleanliness and inspection

Electronics Forum | Thu Jun 07 13:40:12 EDT 2001 | kerryn

Dave, We have very short runs (less than one hour). We have stencils all over the place waiting to be cleaned. It is too time consuming to scope each stencil to inspect for cleanliness. Do you know of any automated or scanning devices that can ra

Stencil cleanliness and inspection

Electronics Forum | Tue Jun 05 16:40:46 EDT 2001 | kerryn

Thanks Phil. However, my objective is to identify stencils that are not 100% clean prior to sending to inventory. I want to catch it before the solder paste has a chance to dry and harden in the apertures. Kerry

BGA inspection microscope

Electronics Forum | Wed Dec 14 06:18:20 EST 2005 | tk380514

right again grant, consider the fact that if you spend enough time inspecting the soldered boards/pre-oven and check the BGA solder paste pads before, and clean the stencil regularly and check solder paste dryness, check oven profiles then after chec

Re: BGA Xray inspection

Electronics Forum | Mon Nov 13 08:20:06 EST 2000 | Peter Loten

I agree with all the previous comments. You need an XRay system with good software capabilities to "clean up" the images, but you also need to interperate the results and training/experience comes into this. Get free trials first on a machine like CR

Stencil cleanliness and inspection

Electronics Forum | Tue Jun 05 20:45:54 EDT 2001 | davef

So, yer lookin' to detect a ~25um glob on the wall of the aperture on yer stencil, eh? Why not wash your stencils before you put them away? That's what we do. Give 'em a quick looksee, then rack 'em, if they're clean. Give 'em anudda looksee befo

BGA rework and inspection

Electronics Forum | Thu May 30 10:31:03 EDT 2002 | robbied

Hi Yannick. This is an issue that we are just recently getting into but here is some ifo that I have gathered so far. I have seen/ used 2 different rework machines. The one we have bought is a 'PACE TF2000' which was at the lower cost end of the mar

BGA inspection microscope

Electronics Forum | Tue Dec 06 15:27:36 EST 2005 | Mike

Steve, You are correct in that X-Ray image of a BGA will not show flux residue. So what? If you are using no clean flux then I would think it doesn't matter if there is some flux residue. Sure if you are reworking a BGA and the operator dumps t

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